Chemo- and Regioselective Palladium(II)-Catalyzed Aminoarylation of N-Allylureas Providing 4-Arylmethyl Imidazolidinones

The aminoarylation reaction of N -allylureas under oxidative palladium catalysis, in the absence of ligands and by using inexpensive H 2 O 2 as the sole oxidant, occurs in a chemo- and regioselective fashion. This intramolecular process takes place via a 5- exo -trig cyclization, and represents an easy approach to 4-arylmethyl imidazolidinones.